| 
              
              
              Open Access  
 
              
              
              
              Research 
              
              
(Published 
				online: 09-05-2016)  
              4. 
				
				
				The efficacy of Na-butyrate encapsulated 
				in palm fat on performance of broilers infected with necrotic 
				enteritis with gene expression analysis - 
				
				M. G. Eshak, M. A. Elmenawey, A. Atta, H. B. Gharib, B. Shalaby 
				and M. H. H. Awaad 
              
              Veterinary World, 9(5): 450-457   
              
   
                
                
doi: 
              
				
				10.14202/vetworld.2016.450-457 
                
				  
				
				M. G. Eshak: 
				
				Department of Cell Biology, National Research Centre, Dokki, 
				Cairo, Egypt; mgergis@yahoo.com 
				
				M. A. Elmenawey: 
				
				Department of Animal Production, Faculty of Agriculture, Cairo 
				University, Cairo, Egypt; elmenawey7@yahoo.com 
				
				A. Atta: 
				
				Department of Animal Production, Faculty of Agriculture, Cairo 
				University, Cairo, Egypt; abdomatta@hotmail.com 
				
				H. B. Gharib: 
				
				Department of Animal Production, Faculty of Agriculture, Cairo 
				University, Cairo, Egypt; hassangharib2001@gmail.com 
				
				B. Shalaby: 
				
				Department of Bacteriology, Animal Health Research Institute, 
				Dokki, Cairo, Egypt; basmashalaby300@hotmail.com 
				
				M. H. H. Awaad: 
				
				Department of Poultry Diseases, Faculty of Veterinary Medicine, 
				Cairo University, Cairo, Egypt; awaad3@gmail.com   
				
				Received: 31-10-2015, Accepted: 31-03-2016, Published online: 
				09-05-2016 
				  
				
              	
              	Corresponding author:M. H. H. Awaad, e-mail: awaad3@gmail.com 
 
              Citation: 
				
				Eshak MG, Elmenawey MA, Atta A, Gharib HB, Shalaby B, Awaad MHH 
				(2016) The efficacy of Na-butyrate encapsulated in palm fat on 
				performance of broilers infected with necrotic enteritis with 
				gene expression analysis, 
				
				Veterinary World, 9(5): 
				450-457. 
 
              
				Abstract 
 
				
				
				Aim: 
				
				To study the efficacy of Na-butyrate encapsulated in palm fat on 
				performance of broiler chickens experimentally infected with 
				necrotic enteritis (NE) with the determination of its protective 
				effect against the changes in the gene expression profiles and 
				deoxyribonucleic acid (DNA) fragmentation. 
				
				
				Materials and Methods: 
				
				A total of 800 one-day-old male Arbor Acres Plus broiler 
				chickens were randomly allocated into four groups for 5 weeks. 
				Na-butyrate was supplemented at dosages of 1 kg/ton for starter 
				diet, 0.5 kg/ton for grower diet, and 0.25 kg/ton for finisher 
				diet (presence or absence). Birds of groups 1 and 2 were 
				inoculated by crop gavages with 4×108 CFU/ml/bird of
				
				
				Clostridium perfringens 
				
				in phosphate buffered saline for 4 successive days, from 14 to 
				17 days of age to produce NE. 
				
				
				Results: 
				
				Addition of Na-butyrate, encapsulated in palm fat, to ration of 
				experimentally infected broilers with NE resulted in increased 
				final body weight, at 35 days of age, reduced total feed 
				consumption, improved feed conversion ratio, reduced cumulative 
				mortality, and increased production number. There were increased 
				intestinal diameter, intestinal length, and significantly 
				increased the weight of bursa of Fabricius(BF) with higher 
				hemagglutination inhibition titers against Newcastle disease 
				(ND) vaccination versus untreated infected and untreated 
				negative control birds. The results showed increased expression 
				levels of alpha-toxin and glyceraldehyde-3-phosphate 
				dehydrogenase in the bursa tissues of broilers infected with
				
				
				C. perfringens. 
				However, the expression levels of these genes in broilers 
				treated with Na-butyrate were similar to the non-infected 
				control group. Supplementation of broilers with Na-butyrate 
				increased the expression level of insulin-like growth factor-1 
				(IGF-1) and decreased the DNA fragmentation induced by 
				
				
				C. perfringens. 
				
				
				Conclusion: 
				
				Na-butyrate significantly improved chicken broiler body weights, 
				increased relative weights of BF, increased antibody titers 
				against ND vaccination, numerically lowered mortality due to
				
				
				C. perfringens 
				
				infection, increased the expression level of IGF-1, and 
				decreased the DNA fragmentation induced by 
				
				C. perfringens. 
				Obtained results point out the effectiveness of Na-butyrate 
				encapsulated in palm fat in improving the production performance 
				variables, immune response, and intestinal morphology in 
				experimentally induced NE as well as in non-infected chicken 
				broilers. 
				
				Keywords: 
				
				chickens, deoxyribonucleic acid fragmentation, gene expression 
				analysis, Na-butyrate, necrotic enteritis. 
 
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